RUKO SPB-DIN338 11,7 mm valssattu spiraalipora HSS-G

Precision drilling in tough materials demands a bit that stays sharp, centered, and accurate. The RUKO SPB-DIN338 11.7 mm roll-forged twist drill bit is engineered for exactly that, delivering reliable performance in steel, cast iron, non-ferrous metals, and plastics.

Who is it for

This drill bit is for metalworkers, machinists, and serious DIYers who need a dependable tool for general-purpose drilling in a range of materials. Its 11.7 mm diameter suits tasks requiring a slightly undersized hole for tapping or reaming.

Main features

• Roll-forged HSS-G construction for durability and long life
• DIN 338 standard ensures consistent geometry and performance
• 135° split point for self-centering and reduced walking
• Bright finish for clean cutting and easy chip evacuation
• Cylindrical shank fits standard drill chucks

Specifications

• Drill bit type: Twist drill bit
• Material: HSS-G (High Speed Steel - Ground)
• Standard: DIN 338
• Diameter: 11.7 mm
• Shank type: Cylindrical
• Shank diameter: 11.7 mm
• Total length: 146 mm
• Working length (flute length): 101 mm
• Point angle: 135°
• Point grind: Split point (cross-ground point)
• Helix angle: Standard (Type N)
• Surface finish: Bright (uncoated)
• Manufacturing process: Ground from solid
• Cutting direction: Right-hand cutting
• Tolerance: h8
• Recommended application: General purpose drilling in steel, cast iron, non-ferrous metals, plastics
• Suitable for materials: Alloyed and unalloyed steel, grey cast iron, malleable cast iron, non-ferrous metals, plastics
• Packaging: Single unit
• Core thickness: Standard
• Flute type: Standard spiral flute

Tips

For best results, use a cutting fluid when drilling steel to reduce heat and extend bit life. Ensure the workpiece is securely clamped and the drill is held perpendicular to the surface.